The radius of the base of a cylinder is 10 centimeters, and it’s height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cons base is 5 centimeters, and it’s height is 10 centimeters

The answer is 24.

Step-by-step explanation:

The volume of cylinder will be =

r = 10 cm

h = 20 cm

So, V = cubic cm

The volume of cone will be =

r = 5 cm

h = 10 cm

So, V = cubic cm.

Now, the number of cones needed to fill the cylinder will be = ≈ 24

The answer is 24.

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.